Pn-3-4350-rv3 (To be published as tia/eia-470-C. 310)
RF Attenuation Between The Handset and The Base
Download 0.5 Mb.
|
- Navigate this page:
- 7.4.2.RF Interference
- 8.TELEPHONE Feature TESTing
7.4.RF Attenuation Between The Handset and The Base7.4.1.Test MethodMeasuring range related to RF attenuation requires a controlled environment as well as the ability to vary the RF attenuation between the handset and the base with a controlled and measurable means. In addition, the parameter to be evaluated (e.g., voice path quality) must be measured at each test point and the result for the tested parameter recorded at each test point. For each of the applicable EUT parameters described in section 8, the following test method applies.
7.4.2.RF InterferenceRF interference may come from a variety of sources such as:
The interference generated by external sources may be classified into 3 categories: (Note the previous definition for frequency bands)
There are a multitude of RF interference types. To make a practical test standard, several types of RF interference have been identified as being the most probable to be encountered by telephone users. The following table describes the types of RF interference signals to be tested:
Table 4 – RF Interference Signals
A typical test set-up with RF interference is shown in A typical test set-up with RF interference is shown in A typical test set-up with RF interference is shown in A typical test set-up with RF interference is shown in A typical test set-up with RF interference is shown in A typical test set-up with RF interference is shown in A typical test set-up with RF interference is shown in A typical test set-up with RF interference is shown in A typical test set-up with RF interference is shown in ......... Figure 9 - RF Interference Test Set-up Note: Interferers shall be applied before the CPE channel is acquired. The RF interference generated for each test (each attenuator setting) must be calibrated with an RF field strength meter (or another appropriate device) at the EUT antenna reference point for each interference level tested. Figure 10 shows a typical test set-up for calibrating interference levels. F Note: Figure 9 shows a generic implementation for performing interference tests. The actual implementation is not restricted to the test set-up described. Any test set-up used must be verified to provide the specified interference levels and RF signal path described for each particular test. For each of the applicable EUT parameters described in section 8, the following test method applies.
8.TELEPHONE Feature TESTingThe performance of each feature of the EUT shall be evaluated separately for:
Note: when performing any of the tests described, the testing environment should not be compromised (e.g., the test chamber doors should remain closed). The EUT should be evaluated for each of the following features if applicable for the EUT:
Directory: pub pub -> Project Scoring Template Pre-Construction Phase New Core/Branch Campus Projects pub -> Acm word Template for sig site pub -> The german unification, 1815-1870 pub -> Baltic Olympiads in Informatics: Challenges for Training Together pub -> Preparation of Papers for ieee transactions on medical imaging pub -> Forthcoming meetings and conferences pub -> Asilomar Conference on Circuits, Systems & Computers, Pacific Grove, ca, November 1978, pp. 55 58 pub -> Forthcoming meetings and conferences pub -> Harmonised compatibility and sharing conditions for video pmse in the 7 9 ghz frequency band, taking into account radar use Download 0.5 Mb. Share with your friends:
| ||||||||||||||||
